Grinding-machine.



Lq-N. BRUNER,

GRINDING MACHINE. APPLICATION FILED NOV. 8, 1916. 1,301,375., Patented Apr. 22, 1919.

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L. N. BRUNER. GRINDING MACHINE.

APPLICATION FILED Nov. II, 1915.

Pa'ented Apr. 22, 1919.

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LOUIS NAGLEE BRUNER, 0F ZURICH, SWITZERLAND.

GRINDING-MACHINE.

'neonata Specification of Letters Patent.

Patented Apr. 22, MM2.

Application sied Ntvember s, 191s. serial No. 130,281.

To aZZ whom it may concern.' Be it known that I, LOUIS NAGLEE BRUNER, a citizen of thevUnited States of America, residing at 7 Bellerive Strasse, Zurich, Switzerland, glass manufacturer, have invented a certain new and useful Grinding-Machine, of which the following is a specification.V

This invention has reference to glassgrinding or truing machines for grinding the mouths ofl glass bottles or jars and for like purposes, asdescribed for instan-ce in United States Specification No. 1011478.

According to the present invention the machine is soA constructed that while the bottle is rapidly rotated, its mouth is acted on by a non-rotating truing or grinding tool, consisting of one or more diamonds in a suitable holder or pencil.

The bottle revolves in a suitable box or v ground surface, and the wear on the diamond is innitesimal.

The box or casing surrounding therevolving bottle and its supporting chucks, is provided with a circularly sliding or hinged door, through which the bottle is inserted and removed.

The motions are controlled automatically, for instance by cams or equivalent devices. The bottle is first placed in position `and properly secured between the chuck device, the door of the box or casing is closed, and a clutch for transmitting motion at ahigh speed to the said 'chuck device is thrown into action. At the same time theV mechanism causes the radial top arm to move therdiamond tool or grinder radially or` laterally slightly till it presses against the surface of the bottle mouth, and causes it to travel up and down or to and fro along the same a I predetermined number of times, after which it is moved back radially clear of the said surface again, and the rotation is automati- Y cally stopped to allow thebottle to be removed and a fresh one inserted.

The up and down strokes of the tool at the top of the machine, to produce the grinding action, are derived from a main or grinderactuating cam at the bottom of the machine,

which is driven by` belting and gearing, from the aforesaid clutch.

The lateral motions of the said tool for applying it to and lifting it oif the work are derived from an auxiliary or controlling cam.

This controlling cam is rotated by a movement derived from the main or grinder actuating cam, for instance through a ratchet and pawl arrangement operated by the upand-down movement or strokes.

The automatic stoppage of the machine by disengaging the clutch is effected by any convenient mechanism at the same time that the control cam withdraws the tool laterally from the work.

There may be five or more sets or groups ofthe above elements or arrangements associated together to forma multiple machine.

In order that the invention may be clearly understood and readily carried into eifect reference will now be had to the accompanying diagrammatic drawings which illustrate by way of example, one construction of machine in accordance therewith.

Inthese drawings zvFigure l is a front view of machine hav-v ing live groups of elements, the extreme left hand group and the portion next to it being in section on the lines 1x 1X and 1-1 of Fig. 2.

Fig. 2 is a transverse section on the line 2 2 of Fig. 1, at right angles to the section in that. figure.

` In the example shown, A and A1 (Fig. 1) indicate two groups or sets of parts forming the sections or elements of the machine. B represents the main frame supporting these groups or sections of which there may be any desired number as `above indicated. This frame is provided at the back with webs or .partitions B1 which lie between the different groups or sections.

C1 is a bracket supporting the driving shaft C and pulley `for a driving belt CX, there being one such belt arrangement for each group or section of the machine.

According to this example, the parts of upon each section, group or element, are driven from the belt C* which servesto rotatea clutch a. The sliding part a1 of'this clutch can be actuated by a main lever Zi pi'voted'at Vand ismoved up-and-down together with lthe inclined shaft f on which it is mounted,

by means ofa short lever g kat the bottom, operated by a suitable cam Zt which constitutes the main or grinder actuating cam. This cam it is driven by a worm Ztl on a counter shaft it?, driven in its 'turn bythe sliding part al ofthe clutch a. by an arrangement comprising a belt h3 working over a counter pulley h4. h5 are bearings supporting the worm shaft h2.

The action of the clutch a is controlled partly through a trip-device or thrustrod i which is connected with oneend Z22 of the aforesaid mainor controlling lever b, and partly also through a catch orprojection j mounted on apivotj'f (Fig. l) on arotary disk jl. This disk is driven by a suitable ratchet wheel jc '(Fig. l) workedby spring pawls j7 on or extendingfrom the vertically reciprocating shaft or rodf whichl carries the top arm and the lgrinding tool. The catch 7' on the said disk engages a correspondingpivoted catchy'2 on the thrust rod at the `moment the machine is required to stop automatically after thegrinding is finished. In this way it forces 'a `V-sh`aped piece or wedge 7'3 on'thethrustrod pastthe edge of a similarly shaped spring-pieceor plunger jt.

The party'4 and its spring are-'situated within a tubular casing js formedon o`r secured to the main frame. These'two `wedges ja .7"AL thus form in effect a snap-overdevice, which gives the thrust or'trip-rod 71 asudde'n though slightlmovemeiit. Through-the end b2 of the main or controlling lever-b this slight movement will -actuate-theiinside or slidingmember 1,1 of the clutchijust enough to stop the machine. This bringsthe'main canr'k torest and the up-and-down 'strokes of the diamond tool-holder e cease.

Normally this member al is keptin-engagement by the rpressure of a-spring l which however isnotssufficiently strong-to putthe clutch a, in engagementagainst the resistance of the snap-over device, ja 7'4.

Henceit will only act'when the-part jawand the thrust rod #are in one .position "(the downward position for instance) whereas its Iaction ceases vwhen thethrustf'rod is raised,

and the clutch'isv disengaged.

Just previous to 'such disengagement however, the diamond` carrier c is'mved laterally inward (viz. away from the work and back toward the'center of thebottle mouth) by a suitable spring f2 connected at one end tothe framing and at the other end to the youterextremityofthe lever f1. The action of thediamond carrier e is controlled by a vertical or approximately vertical lever Z pivoted adjustably. at Z1. "worked by an auxiliary cammand acts,

This lever is through-an adjusting screw Z2 and an intermediate piece Z3, on the fiat face Z3 of a sidewise projection or Ahorizontal arm (Z2 carried by the boss Zl'ofthe aforesaid top arm or lever (Z by whichthe grinding'tool is supported. u

Owing to the contact faces of the parts Z3 Z3 being made flat,as just mentioned, this arrangement permits Athe reciprocating rod and tool carrier to move upaand-down "relatively to the intermediate piece withoutany interference from lthe latter.

VThe pressure of the above intermediate piece Z3 xis controlled by 4auxiliaryor control cam m moving with the aforesaidfdisk j?, and having a nose -or `projection lm1.

This cam moves the lvertical lever vZ 'and thereby slightly rotates lthe toparm d sufficiently tol'press the diamond against-the inside of the bottle-mouth whenrequired, and then when the projection -ml on fthe cam clears the roller-Zt'atthe Alower endof the -l'ever Z, -it allowsfthe diamondtomove'back (that is tosa-y'away fromtheglass) under 'the action of the aforesaid spring 'f2 acting 'on anV arm f1 'carried by thefrodff.

Vhen-the bottle rtX-istobe inserted linto or removed lfrom one of thesetsof apparatus, the lower revolvingchuck part n fand fits spindle nl are moved downward by depressing the handle jof the Imain lever b counterto the-pressurey o'f'a conical orother spring/n2 the 'extent of motion being limited forinstancaby'the distance between a collar n4 on the spindle nl and the bottom bearing '71,5 thereof -This collar fis fast on the spindle `nl but has Aa certain vamount 'of enblwis'e play inside; the bo'ss ofthe sliding 'clutchimember a1 which allows the bottom chuck 'aand-its spindle nl to `adjust themselves, yfor 'slight variations inthellength' of the bottles, under the 'action of ltheconical "spring azacting against A'a nut i n3. 'For `greater variations in -leng`tlr of the'bottles,"the"lower 'nut or' collar l'/isslfackened rsonas toloo'sen a conie'algrip `or chuck nut iwith "which "it is Vicombined. The spindler can then be reladj usted accordingly in height as'requiredafterwhichthe collar is again' tightened' up.

yThe conical or othersp'rinfg n2 aboye referred to, forces fthe parts upward 'with F a :pressur'esufi'c-ientto holdfthef bottle mouth l in the top chuck ax but "not "sufficient "to actually operate'the V-pieces ofthe snapover device 'jafjt and' rengagethefparts a "al of the clutch. In fact rengagement does not occur until the (now-raised) V-piece or wedge js previously mentioned, is forced down past the point of the other V-piece or spring pusher 7'4 by hand, by the main lever. The arrangement is analogous to that shown in Fig. 'ofthe aforesaid specification No. 1011478 and no special claim is made to it.

When the lower end of the diamond presser-lever Z slips over the nose m1 of the cam m, so permitting thel spring f2 to slightly turn the shaft f and draw back the diamond away from the work, the projection or pin j on the disk jl engages under the pivoted catch 3'2 and lifts it together with the block ,53 and shaft z' upward again, so reversing the hand lever b. This movement is only sufficient however to move js past j* and to disconnect the parts a; al of the clutch, and it is necessary for the operator to push the lever completely down to permit of the removal of the bottle.

To rengage the clutch-part al therefore, it is necessary to give a sharp upward pull or movement to the handle of the main or controlling lever so forcing down the thrust rod 7l and again reversing the positions of the V-pieces of the snap-over device.

The stem e of the Vdiamond carrier is tubular, or has a bore or axial passage through which Water can flow 4to the diamond, and the main casing o of the section is closed during the grinding by a suitable door o1, as before indicated.

Obviously the invention maybe modified in various ways in carrying the same into practice without departing from the general nature thereof.

1. In a machine for grinding bottle mouths, the combination of a diamond tool, a slightly rotating top arm carrying the same, a spring-controlled shaft slightly inclined from the vertical carrying said top arm and upright lever for turning said shaft and arm slightly in one direction counter to the spring, a cam for operating said lever, an adjusting screw at one end of said lever,

and a projection carried by said shaft and cooperating with the adjusting screw, substantially as described.

2. In a grinding machine, the combination of an upright chuck-device, a slightly inclined non-rotating diamond tool at the top of the machine projecting into the top of said chuck device, a clutch for driving said chuck, a main cam at the bottom of the machine driven from said clutch and imparting to-and-fro strokes to the tool and an auxiliary cam imparting lateral movements to the tool, substantially as described.

3. In a grinding machine of the kind referred to, the combination of an upright chuck device, a non-rotating diamond tool working at the top of said chuck device, a casing surrounding the latter, a mo-vable door on said casing, a clutch for driving the chuck, cams for moving the tool to and fro and laterally, and means for stopping the machine automatically 4after the grinding, substantially as described.

4. In abottle-grinding machine, the combination of a slightly inclined non-rotating diamond tool for grinding the interior of `the bottle mouth, a chuck device for holding and rotating the bottle, a casing inclosing the chuck device, a clutch-driven spindle connected with the bottom member of the chuck, for imparting to and fro strokes to the diamond tool, a main cam driven from said clutch, an inclined shaft moved up and down by said grinder cam and having the diamond tool carried by an arm at its upper end, an auxiliary cam for imparting a slight twisting or'rotary movement to the inclined shaft to control the contact between the diamond and the work, and means actuated step by step by the up-and-down movements of the inclined shaft for stopping the machine automatically when the grinding is finished, substantially as described.

In testimony whereof I have signed my name to this specification.

LOUIS NAGLEE 13R-UNER. Witnesses:

CHARLES E. TAYLOR, LUCY Cos'rIGAN.

Copies of this patent may be obtained for-ve centseach, by addressing the Commissioner of Iatents, Washington, D. G. 

